Evaluation of fungicides in control of spot-type net blotch on barley

Spot form of net blotch suppression and yield of barley in response to fungicide application in the Wimmera region of Victoria, Australia

“…According to Khan (1989) and Jayasena et al (2007), SFNB causes grain yield loss when infection is greater than 10 % on the top three leaves, increasing by 0.4 t/ ha for each additional 10 % of leaf area infected where yield potential is 4-6 t/ha. Grain plumpness and weight can also be affected by SFNB (Jayasena et al 2002;2007). Grain yield and quality losses associated with SFNB vary depending on regional factors such as inoculum load, variety susceptibility, sowing date and climatic conditions (McLean et al 2009).…”

“…Previous studies indicated that foliar fungicide applied at stem elongation or flag leaf emergence can effectively suppress SFNB and improve grain yield and quality (van den Berg and Rossnagel 1990;Jayasena et al 2002;Poole and Arnaudin 2014). However, for NFNB, increases in grain yield and quality can be achieved by application of foliar fungicide at head emergence (Entz et al 1990).…”

“…Several fungicide chemistries are available for suppression of SFNB. Jayasena et al (2002) reported that pyraclostrobin, propiconazole and epoxiconazole were all effective in Western Australia.…”

Desarrollo de nuevas metodologías para el análisis de fungicidas triazólicos en arándanos

“…Los cultivos de vid (Soleas et al, 2000;Athanasopoulos et al, 2003;Trösken et al 2005), cebada (Jayasena et al, 2002), trigo (Ramirez et al, 2004), "sweet cherry" (Spotts et al 2002), aromáticas (Groenewoud et al,1995) entre otros, son propensos a estas enfermedades, siendo los triazoles los fungicidas de aplicación más reciente, tal como se observa en la bibliografía consultada respecto a la aplicación de estos plaguicidas. En Chile las plagas del arándano, varía según las regiones y son similares a las que atacan nuestros cultivos (Larraín et al, 2007) En la siguiente figura se presentan los diferentes efectos de los frutos causados por diversas enfermedades …”

“…(Barberá, 1989;Coscolla, 1993;Garland et al 1999;Jayasena et al, 2002;Palanti y Susco, 2004;Spotts et al, 2002;Zambonin et al 2002;Sanagui et al, 2004;Kyriakidis et al, 2005;Lhomme et al, 2007 ;Footprint, 2009). (Wu et al, 2001;Hutta et al, 2002;Toribio et al 2004 (Garland et al, 1999;Nozal et al, 2005;Trösken et al, 2005).…”